--- /dev/null
+/*
+ * encoder.h include file
+ *
+ * Copyright (c) 2000 Mark Taylor
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef LAME_ENCODER_H
+#define LAME_ENCODER_H
+
+/***********************************************************************
+*
+* encoder and decoder delays
+*
+***********************************************************************/
+
+/*
+ * layer III enc->dec delay: 1056 (1057?) (observed)
+ * layer II enc->dec delay: 480 (481?) (observed)
+ *
+ * polyphase 256-16 (dec or enc) = 240
+ * mdct 256+32 (9*32) (dec or enc) = 288
+ * total: 512+16
+ *
+ * My guess is that delay of polyphase filterbank is actualy 240.5
+ * (there are technical reasons for this, see postings in mp3encoder).
+ * So total Encode+Decode delay = ENCDELAY + 528 + 1
+ */
+
+/*
+ * ENCDELAY The encoder delay.
+ *
+ * Minimum allowed is MDCTDELAY (see below)
+ *
+ * The first 96 samples will be attenuated, so using a value less than 96
+ * will result in corrupt data for the first 96-ENCDELAY samples.
+ *
+ * suggested: 576
+ * set to 1160 to sync with FhG.
+ */
+
+#define ENCDELAY 576
+
+
+
+/*
+ * make sure there is at least one complete frame after the
+ * last frame containing real data
+ *
+ * Using a value of 288 would be sufficient for a
+ * a very sophisticated decoder that can decode granule-by-granule instead
+ * of frame by frame. But lets not assume this, and assume the decoder
+ * will not decode frame N unless it also has data for frame N+1
+ *
+ */
+/*#define POSTDELAY 288*/
+#define POSTDELAY 1152
+
+
+
+/*
+ * delay of the MDCT used in mdct.c
+ * original ISO routines had a delay of 528!
+ * Takehiro's routines:
+ */
+
+#define MDCTDELAY 48
+#define FFTOFFSET (224+MDCTDELAY)
+
+/*
+ * Most decoders, including the one we use, have a delay of 528 samples.
+ */
+
+#define DECDELAY 528
+
+
+/* number of subbands */
+#define SBLIMIT 32
+
+/* parition bands bands */
+#define CBANDS 64
+
+/* number of critical bands/scale factor bands where masking is computed*/
+#define SBPSY_l 21
+#define SBPSY_s 12
+
+/* total number of scalefactor bands encoded */
+#define SBMAX_l 22
+#define SBMAX_s 13
+
+
+
+/* FFT sizes */
+#define BLKSIZE 1024
+#define HBLKSIZE (BLKSIZE/2 + 1)
+#define BLKSIZE_s 256
+#define HBLKSIZE_s (BLKSIZE_s/2 + 1)
+
+
+/* #define switch_pe 1800 */
+#define NORM_TYPE 0
+#define START_TYPE 1
+#define SHORT_TYPE 2
+#define STOP_TYPE 3
+
+/*
+ * Mode Extention:
+ * When we are in stereo mode, there are 4 possible methods to store these
+ * two channels. The stereo modes -m? are using a subset of them.
+ *
+ * -ms: MPG_MD_LR_LR
+ * -mj: MPG_MD_LR_LR and MPG_MD_MS_LR
+ * -mf: MPG_MD_MS_LR
+ * -mi: all
+ */
+
+#define MPG_MD_LR_LR 0
+#define MPG_MD_LR_I 1
+#define MPG_MD_MS_LR 2
+#define MPG_MD_MS_I 3
+
+
+#include "machine.h"
+#include "lame.h"
+
+int lame_encode_mp3_frame (
+ lame_global_flags* const gfp,
+ sample_t* inbuf_l,
+ sample_t* inbuf_r,
+ unsigned char* mp3buf,
+ int mp3buf_size );
+
+#endif /* LAME_ENCODER_H */
git.asbjorn.biz / swftools.git / blobdiff